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libxml2

    1: Index: parser.c
    2: ===================================================================
    3: --- parser.c	(revision 3773)
    4: +++ parser.c	(working copy)
    5: @@ -2505,6 +2505,11 @@ xmlStringLenDecodeEntities(xmlParserCtxt
    6:  	    c = CUR_SCHAR(str, l);
    7:  	else
    8:  	    c = 0;
    9: +        if ((nbchars > 500000) &&
   10: +	    (ctxt->instate == XML_PARSER_ATTRIBUTE_VALUE)) {
   11: +	    xmlFatalErr(ctxt, XML_ERR_ENTITY_LOOP, NULL);
   12: +	    goto int_error;
   13: +        }
   14:      }
   15:      buffer[nbchars++] = 0;
   16:      return(buffer);